The Odisha Staff Selection Commission Combined Higher Secondary Level (OSSC CHSL) exam is a crucial step for aspirants aiming to secure government positions in Odisha. Among the various sections in this competitive exam, Reasoning is a pivotal component that tests candidates’ logical and analytical thinking abilities. Here, we present a curated set of 30 Multiple Choice Questions (MCQs) in Reasoning, designed to help aspirants prepare effectively for OSSC CHSL.
Top 30 Reasoning MCQs For OSSC CHSL
- Find the odd one out from the given set of numbers.
14, 28, 35, 46, 56, 84
a) 56
b) 84
c) 35
d) 46
Answer: d
Explanation: Here, the numbers 14, 28, 35, 56 and 84 are perfectly divisible by 7.
i.e.
14 ÷ 7 = 2
28 ÷ 7 = 4
35 ÷ 7 = 5
56 ÷ 7 = 8
84 ÷ 7 = 12
But the number 46 is not perfectly divisible by 7 (i.e. not a multiple of 7).
Hence, 46 is the answer. - Find odd one out from the given jumbled words.
LNUAIMMIU, ELEST, OPERPC, NMKOYE, INCKLE
a) NMKOYE
b) OPERPC
c) INCKLE
d) ELEST
Answer: a
Explanation: The Rearrangement of the words are : –
LNUAIMMIU ⇒ ALUMINIUM
ELEST ⇒ STEEL
OPERPC ⇒ COPPER
NMKOYE ⇒ MONKEY
INCKLE ⇒ NICKLE
Here the odd one out is MONKEY, as all others are names of the elements that exist in the nature. - Find the odd one out.
a) BEK
b) CFL
c) MPS
d) GJP
Answer: c
Explanation: Here, the letters given follows the below pattern
C + 3 ➔ F + 6 ➔ L
B + 3 ➔ E + 6 ➔ K
G + 3 ➔ J + 6 ➔ P
But MPS does not follow this pattern (i.e. M + 3 ➔ P + 3 ➔ S).
Hence, MPS is the answer. - Find the odd one out.
a) M
b) S
c) T
d) O
Answer: b
Explanation: Here, the letters M, O and T have exactly same mirror images.
i.e.
M | M
O | O
T | T
But, letter S has inverted mirror image (i.e. S | Ꙅ).
Hence, S is the answer. - In a certain code “CODE” is written as “DPEF”. How is “DEFENCE” is written in that code?
a) KWMCJFL
b) ELDFSAP
c) EFGFODF
d) HRAOSCV
Answer: c
Explanation: Here, each letter moves +1 from its original position.
i.e. for “CODE” C→D, O→P, D→E, E→F.
Similarly, for “DEFENCE” the code is EFGFODF.
Hence, the answer is EFGFODF. - In a certain code “SAND” is written as “UCPF”. How is “STONE” is written in that code?
a) SRLFE
b) UNSOP
c) UVQPG
d) UDLPQ
Answer: c
Explanation:
Each letter in the original word moves +2 positions forward in the alphabet:
S → U, A → C, N → P, D → F
Applying the same rule:
S → U, T → V, O → Q, N → P, E → G
Therefore, “STONE” is coded as “UVQPG”. - In a certain code “LION” is written as “MNHK”. How is “MONKEY” is written in that code?
a) BWKXSU
b) XDJMNL
c) FSHXIL
d) GQWPJS
Answer: b
Explanation:
Reverse the letters of the word and move -1 position back in the alphabet:
LION → NOIL, which codes to MNHK
MONKEY → YEKNOM, which codes to XDJMNL
Therefore, “MONKEY” is coded as “XDJMNL”. - In a certain code “CODE” is written as “DPEF”. How is “DEFENCE” is written in that code?
a) EFGFODF
b) HRAOSCV
c) KWMCJFL
d) ELDFSAP
Answer: a
Explanation:
Each letter moves +1 position forward in the alphabet:
CODE → DPEF
Applying the same rule:
DEFENCE → EFGFODF
Therefore, “DEFENCE” is coded as “EFGFODF”. - In a certain code “BASE” is written as “GUCD”. How is “COMMAND” is written in that code?
a) FCIDSLN
b) KOSFLKV
c) FPCOOQE
d) GNILDFW
Answer: c
Explanation:
Reverse the letters of the word and move +2 positions forward in the alphabet:
BASE → ESAB, which codes to GUCD
COMMAND → DNAMMOC, which codes to FPCOOQE
Therefore, “COMMAND” is coded as “FPCOOQE”. - In a certain code “SPREAD” is written as “sPReaD”. How is “CORONA” is written in that code?
a) CoroNA
b) COroNa
c) coRoNa
d) CoRonA
Answer: c
Explanation:
According to the position of the letters:
Odd-positioned letters are in lowercase, even-positioned letters are in uppercase.
Applying this rule:
CORONA → coRoNa
Therefore, “CORONA” is coded as “coRoNa”. - Introducing a woman, a man said, “Her husband is the only son of my father”. How is that woman related to the man?
a) Husband
b) Sister
c) Wife
d) Mother
Answer: c) Wife
Explanation: The man’s father has only one son, who is the husband of the introduced woman. Therefore, the man himself is her husband. Hence, the answer is Wife. - Q’s mother is the sister of P and daughter of S. A is the son of P and Brother of H. G is the father of H. How is S related to G?
a) Nephew
b) Son-in-law
c) Grandfather
d) Father-in-law
Answer: d) Father-in-law
Explanation: P, who is Q’s mother’s sister, is the daughter of S. A, who is P’s son, is the brother of H. G is the father of H, making G the husband of P (S’s daughter). Therefore, S is the father-in-law of G. Hence, the answer is Father-in-law. - R is the son of A’s father’s sister. S is son of D, who is the mother of G and grandmother of A. H is the father of T and grandfather of R. D is wife of H. How is R related to D?
a) Nephew
b) Son
c) Grandson
d) Insufficient Data
Answer: c) Grandson
Explanation: H is the grandfather of R, and D is H’s wife. Therefore, D is the grandmother of R. Hence, the answer is Grandson. - Anuj introduced a girl as the daughter of the only daughter of the father of his maternal uncle. How is Anuj related to that girl?
a) Son-in-law
b) Brother
c) Son
d) Nephew
Answer: b) Brother
Explanation: The girl’s mother is the only daughter of her father, who is also the father of Anuj’s maternal uncle. Thus, Anuj and the girl share the same father, making them siblings. Hence, the answer is Brother. - Pointing towards a person, a woman said to a man, “His father is the only son of your mother”. How is the man related to that person?
a) Brother
b) Father
c) Son
d) Husband
Answer: b) Father
Explanation: The man’s mother has only one son, which is the man himself. Therefore, the man is the father of the person pointed out by the woman. Hence, the answer is Father. - Chew : Mouth :: Walk : ?
a) Legs
b) Arms
c) Eyes
d) Ears
Answer: a) Legs
Explanation: Chewing is done by the mouth. Similarly, walking is done by the legs. - Light : Sun :: Heat : ?
a) Electricity
b) Fire
c) Water
d) Alcohol
Answer: b) Fire
Explanation: The sun is a source of light. Similarly, fire is a source of heat. - India : Delhi :: Rajasthan : ?
a) Jaipur
b) Rampur
c) Pushkar
d) Goa
Answer: a) Jaipur
Explanation: Delhi is the capital of India. Similarly, Jaipur is the capital of Rajasthan. - Bulb : Electricity :: Windmill : ?
a) Heat
b) Air
c) Water
d) Ice
Answer: b) Air
Explanation: Electricity powers a bulb. Similarly, wind (air) powers a windmill. - Ice : Freezing point :: Vapour : ?
a) Melting point
b) Boiling point
c) Breaking Point
d) Yielding point
Answer: b) Boiling point
Explanation: Ice forms at the freezing point of water. Similarly, vapor forms at the boiling point of water. - Four girls are sitting on a bench to be photographed. Komal is to the left of Aakriti. Disha is to the right of Aakriti. Ankita is between Aakriti and Disha. Who would be second from the left in the photograph?
a) Komal
b) Aakriti
c) Ankita
d) Disha
Answer: b
Explanation: Komal → Aakriti → Ankita → Disha. Hence, Aakriti is second from the left. - What is the next number in the series: 21, 16, 22, 15, 23, 14, …?
a) 24
b) 13
c) 21
d) 19
Answer: a
Explanation: The pattern alternates between increasing and decreasing numbers. So, the next number after 14 is 24. - Find the next number in the series: 61, 52, 63, 94, 46, …?
a) 18
b) 81
c) 35
d) 49
Answer: a
Explanation: Each number is the reverse of a square of a number. For example, 61 (which is 16 reversed) corresponds to 4^2. Following this pattern, the next number is 18 (which is 81 reversed). - A person is sixth in the queue from either end. How many people are there in the queue?
a) 9
b) 11
c) 15
d) 10
Answer: b
Explanation: Being sixth from either end means there are 5 people in front and 5 people behind. Therefore, the total number of people in the queue is 11. - A cowherd had 23 cows. All but seven died. How many will he have left?
a) 7
b) 11
c) 8
d) 9
Answer: a
Explanation: If all but seven cows died out of 23, then 7 cows will be left. - Which figure is different from the rest?
a) Figure A
b) Figure B
c) Figure C
d) Figure D
Answer: b
Explanation: In figures A, C, and D, circles are placed on the edges of the shape, whereas in figure B
, circles are placed at the vertices of the shape. - Which figure is different from the rest?
a) Figure A
b) Figure B
c) Figure C
d) Figure D
Answer: d
Explanation: Figures A, B, and C have parallel lines inside them, while figure D
has intersecting lines. - Which figure is different from the rest?
a) Figure A
b) Figure B
c) Figure C
d) Figure D
Answer: b
Explanation: In figures A, C, and D, the top left corners are shaded, whereas in figure B
, the bottom right corner is shaded. - Which figure is different from the rest?
a) Figure A
b) Figure B
c) Figure C
d) Figure D
Answer: c
Explanation: Figures A, B, and D are divided into equal parts, whereas figure C
is divided into unequal parts. - Which figure is different from the rest?
a) Figure A
b) Figure B
c) Figure C
d) Figure D
Answer: c
Explanation: Figures A, B, and D have four arrow heads, whereas figure C
has only three arrow heads.
